Worst trends. The Worst Trends in Modern Cars and trucks, DIY and car review with Scotty Kilmer. Modern car fails. Modern cars vs old cars and the problem with trends that are on new cars. The worst modern car designs of 2018. These new features might be trending now, but in the future we'll all be making fun of them. The worst trendy designs in new cars. Trends that need to die in 2019. Car Advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 51 years.